Security Bulletin: IBM MQ AMQP Channels could allow an authenticated user to cause a denial of service due to an issue processing messages. (CVE-2020-4931)

Security Bulletin

Summary

An issue was found within the AMQP Channel function of the IBM MQ queue manager which could allow an attacker to execute a denial of service attack against AMQP channels.

Vulnerability Details

CVEID: CVE-2020-4931
DESCRIPTION: IBM MQ AMQP Channels could allow an authenticated user to cause a denial of service due to an issue processing messages.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191747 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM MQ	9.1 LTS
IBM MQ	9.0 LTS
IBM MQ	8.0
IBM MQ	9.2 CD
IBM MQ	9.2 LTS

Remediation/Fixes

This issue is addressed under APAR IT34485.

IBM MQ v8

Apply FixPack 8.0.0.16

IBM MQ v9.0 LTS

Apply FixPack 9.0.0.11

IBM MQ v9.1 LTS

Apply FixPack 9.1.0.7

IBM MQ v9.2 LTS

Apply iFix for APAR IT34485

IBM MQ v9.2 CD

Upgrade to IBM MQ 9.2.1

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

9 March 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: IBM MQ AMQP Channels could allow an authenticated user to cause a denial of service due to an issue processing messages. (CVE-2020-4931)